What does "destiny" mean?

Destiny: The fixed order of things; invincible necessity; fate; a resistless power or agency conceived of as determining the future, whether in general or of an individual. But who can turn the stream of destiny Spenser. Fame comes only when deserved, and then is as inevitable as destiny, for it is destiny. Longfellow. The Destinies (Anc. Myth.), the three Parcæ, or Fates; the supposed powers which preside over human life, and determine its circumstances and duration. Marked by the Destinies to be avoided. Shak.